Growing community of inventors

Tokyo, Japan

Yoshifumi Oka

Average Co-Inventor Count = 2.50

ph-index = 2

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 4

Yoshifumi OkaHirotoki Yokoi (3 patents)Yoshifumi OkaTomoaki Uchiyama (3 patents)Yoshifumi OkaMasami Aoyama (2 patents)Yoshifumi OkaYoshifumi Oka (5 patents)Hirotoki YokoiHirotoki Yokoi (7 patents)Tomoaki UchiyamaTomoaki Uchiyama (6 patents)Masami AoyamaMasami Aoyama (10 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. The Furukawa Electric Co., Ltd. (5 from 2,630 patents)


5 patents:

1. 11707804 - Mask-integrated surface protective tape

2. 10916439 - Mask-integrated surface protective film

3. 10699933 - Wafer-fixing tape, method of processing a semiconductor wafer, and semiconductor chip

4. 10418267 - Method of processing a semiconductor wafer, semiconductor chip, and surface protective tape

5. 10307866 - Method of producing semiconductor chip, and mask-integrated surface protective tape used therein

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as of
12/8/2025
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